Official Answer
Answer
Saboda maɓuɓɓugan ruwan raƙuman ruwa suna faɗaɗa diamita lokacin da aka matsa, hanyar yin tuƙi (tsakiya) yana da mahimmanci. Don 'Shaft Piloting', ana amfani da $D_{in}$ na bazara don daidaitawa. Diamita na sandar $D_{shaft}$ yakamata a yi girma kamar $D_{shaft} <D_{in(min)} - \text{Contraction}$. Don 'Bore Piloting', ana amfani da $D_{out}$ na bazara. Matsakaicin diamita $D_{bore}$ dole ne ya zama $D_{bore}> D_{out(max)} + \rubutu{Faɗawa}$. Gabaɗaya, an fi son yin tukin jirgin sama don maɓuɓɓugan Crest-to-Crest saboda yana ba da damar bazara ta faɗaɗa cikin yardar kaina ba tare da ɗaure mai jujjuya ba a kan sandar, wanda in ba haka ba zai gabatar da hysteresis a cikin lanƙwasa-daukar nauyi.
